1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_SENSOR_DEVICE_H
#define ANDROID_SENSOR_DEVICE_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/KeyedVector.h>
#include <utils/Singleton.h>
#include <utils/String8.h>
#include <gui/Sensor.h>
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000; // 5 Hz
class SensorDevice : public Singleton<SensorDevice> {
friend class Singleton<SensorDevice>;
struct sensors_poll_device_t* mSensorDevice;
struct sensors_module_t* mSensorModule;
mutable Mutex mLock; // protect mActivationCount[].rates
// fixed-size array after construction
struct Info {
Info() : delay(0) { }
KeyedVector<void*, nsecs_t> rates;
nsecs_t delay;
status_t setDelayForIdent(void* ident, int64_t ns);
nsecs_t selectDelay();
};
DefaultKeyedVector<int, Info> mActivationCount;
SensorDevice();
public:
ssize_t getSensorList(sensor_t const** list);
status_t initCheck() const;
ssize_t poll(sensors_event_t* buffer, size_t count);
status_t activate(void* ident, int handle, int enabled);
status_t setDelay(void* ident, int handle, int64_t ns);
void dump(String8& result, char* buffer, size_t SIZE);
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_SENSOR_DEVICE_H
|
